Mbh 13.7.2b

He who lies down with his head downwards, or who lives in water, or who lives secluded and alone in the practice of Brahmacharya, attains to all the desired ends. He who offers shelter to a guest and welcomes him with water to wash his feet as also with food, light and bed, attains to the merits of the sacrifice with the five gifts. He who lays himself down on a warrior's bed on the battle-field in the posture of a warrior, goes to those eternal regions where all the objects of desire are fulfilled. A man, O king, attains to riches that makes charitable gifts. One secures obedience to one's command by the vow of silence, all the enjoyments of life by practice of austerities, long life by Brahmacharya, and beauty, prosperity and freedom from disease by abstaining from injury to others. Sovereignty falls to the lot of those that subsist on fruits and roots only. Residence in heaven is attained by those that live on only leaves of trees. A man, O king, is said to obtain happiness, by abstention from food. By confining one's diet to herbs alone, one becomes possessed of cows. By living on grass one attains to the celestial regions. By foregoing all intercourse with one's wife and making ablutions three times during the day and by inhaling the air only for purposes of subsistence, one obtains the merit of a sacrifice. Heaven is attained by the practice of truth, nobility of birth by sacrifices. The Brahmana of pure practices that subsists on water only, and performs the Agnihotra ceaselessly, and recites the Gayatri, obtains a kingdom. By abstaining food or by regulating it, one attains to residence in heaven. O king, by abstaining from all but the prescribed diet while engaged in sacrifices, and by making pilgrimage for twelve years, one attains to a place better than the abodes reserved for heroes. By reading all the Vedas, one is instantly liberated from misery, and by practising virtue in thought, one attains to the heavenly regions.